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  4. Non-cyclic photophosphorylation is also known as?

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Q. Non-cyclic photophosphorylation is also known as?

NTA AbhyasNTA Abhyas 2020

Solution:

In the Z‐scheme, electrons are removed from water and then donated to the lower (non‐excited) oxidized form of P680. Absorption of a photon excites P680 (PSII) to P680*, which “jumps” to a more actively reducing species. P680* donates its electron to the quinone‐cytochrome bf chain, with proton pumping. The electron from cytochrome bf is donated to PSI, converting P700 (PSI) to P700*. This electron, along with others, is transferred to NADP, forming NADPH. Alternatively, this electron can go back to cytochrome bf in cyclic electron flow.